You are able to receive email, but not send.

• Verify that your e-mail settings are correct. You may need to update your account/username in your e-mail client to user@yourdomain.com (your full e-mail address).
• Try checking for new mail before you try to send mail.
• If you still have problems, your ISP may be blocking what is called "Port 25".  Port 25 is the port used to send e-mail. They are doing this to cut down on the amount of spam that is sent from their networks.  All e-mail sent via the Internet is routed through the port 25, the channel used for communication between an e-mail client and an e-mail server.  Port 25 blocking allows ISPs to block spam sent out through their networks, but it tends to punish the innocent that have a need to send through e-mail servers other than those belonging to their ISP. The ISPs that block port 25 require their SMTP server to be used instead of the remote SMTP server or a SMTP server running on your computer.

How the port 25 is used

All e-mail sent via the Internet is routed through port 25. When an e-mail server that runs on your computer delivers messages, it always uses port 25 to transmit data to remote e-mail servers. Therefore, if your ISP is blocking the port, your messages will not get through.

This list contains some of the major ISPs that block port 25 on their servers:

• AOL
• AT&T
• BellSouth
• CableOne
• Charter
• Comcast ATTBI
• Cox
• Earthlink
• Flashnet
• MediaOne
• MindSpring
• MSN
• NetZero
• People PC
• Sprynet
• Sympatico.ca
• Verio
• Verizon

What to do:

In order to send outgoing mail for your domain name hosted on our servers, you will need to change the Outgoing SMTP server to your ISP's. The incoming mail server will always be your domain name (incoming SMTP uses a different port and is unaffected by ISPs blocking port 25.